As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
START VALVE OPEN LIGHT ILLUMINATED ON NR 4 ENG DURING FLIGHT. ENG WAS SHUT DOWN IAW AOM CHECKLIST. 60,000 LBS OF FUEL WAS DUMPED. REMOVED AND REPLACED NR 4 START VALVE AND PRESSURE SWITCH PER B747 M/M 80-11-04. OPS CKD NORMAL, VALVE PN ON 726574-7 OFF 726574-7 SN ON EL22905 OFF AA22006.